This study was done for the determination of ginsenosides contents of Korean ginseng and ginseng products as well as the development of analytical method for ginsenosides. It is known that perfect segregation of ginsenoside Rg and Re is not easy, but in this study almost perfect segregation can be possible by the control of concentration between acetonitrile and water. Among Korean ginseng, ginseng powdered tea and red ginseng powdered tea, the highest ginsenosides content of sum of each 7 kind o ginsenoside was found in red ginseng powdered tae as 23,211${mu}g$ per 1g/dw The ginsenoside content of ginseng powdered tea was lower than red ginseng powdered tea as 15,217${mu}g$ per 1g/dw Total ginsenoside content in the root of ginseng was 29,268${mu}g$ per 1/dw Each amount of ginsenoside contained in ginseng root was in the order of Rb1, Rg1, and Rc. It was shown that there was difference in constitutional element of ginsenosides in ginseng powdered tea and ginseng root.